FormView 添加,删除,修改,分页

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;

namespace sitemapdemo
{
    /// <summary>
    /// 2011-03-24
    /// 涂聚文
    /// </summary>
    public partial class FormViewDemo : System.Web.UI.Page
    {
        string GalleryID = string.Empty;
        string GalleryName = string.Empty;
        string Picture = string.Empty;
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            Page.Title = "FormView 添加,删除,修改,分页";
            if (!Page.IsPostBack)
            {
                BindData();
            }
        }
        /// <summary>
        /// 绑定
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void myFormView_DataBound(object sender, EventArgs e)
        {
            //*** Image ***//
            Image Image1 = (Image)(myFormView.FindControl("Image1"));
            if (Image1 != null)
            {
                Image1.ImageUrl = "images/" + (string)DataBinder.Eval(myFormView.DataItem, "Picture");
                Image1.Attributes.Add("OnClick", "window.open('images/" + (string)DataBinder.Eval(myFormView.DataItem, "Picture") + "')");
                Image1.Style.Add("cursor", "hand");
                Image1.ToolTip = (string)DataBinder.Eval(myFormView.DataItem, "GalleryName");
            }

            //*** GalleryName ***//
            Label lblGalleryName = (Label)(myFormView.FindControl("lblGalleryName"));
            if (lblGalleryName != null)
            {
                lblGalleryName.Text = (string)DataBinder.Eval(myFormView.DataItem, "GalleryName");
            }
            //Label lblGalleryID = (Label)(myFormView.FindControl("lblGalleryID"));
            //if (lblGalleryID != null)
            //{
            //    lblGalleryID.Text = (string)DataBinder.Eval(myFormView.DataItem, "GalleryID");
            //}
            
        }
        /// <summary>
        /// 显示分页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void ShowPageCommand(object sender, FormViewPageEventArgs e)
        {
            myFormView.PageIndex = e.NewPageIndex;
            BindData();
        }
        /// <summary>
        /// 
        /// </summary>
        void BindData()
        {
            DataTable dt;

            //*** DataSet To DataTable ***//
            dt = CreateDsToDt();

            //*** DataTable ***//
            //dt = CreateDataTable();

            //*** DataSet ***//
            //DataSet ds;
            //ds = CreateDataSet();
            //dt = ds.Tables[0]; //*** Convert DataSet to DataTable ***//

            //*** TableRows ***//
            //dt = DataTableRows();

            //*** BindData to FormView ***//
            myFormView.DataSource = dt;
            myFormView.DataBind();
        }

        /// <summary>
        /// //*** DataTable ***//
        /// </summary>
        /// <returns></returns>
        protected DataTable CreateDataTable()
        {
            System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();
            System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();
            DataTable dt = new DataTable();


            String strConnString;
            strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
            Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";
            objConn = new System.Data.OleDb.OleDbConnection(strConnString);
            objConn.Open();

            String strSQL;
            strSQL = "SELECT * FROM gallery";

            dtAdapter = new System.Data.OleDb.OleDbDataAdapter(strSQL, objConn);
            dtAdapter.Fill(dt);

            dtAdapter = null;

            objConn.Close();
            objConn = null;

            return dt; //*** Return DataTable ***//

        }

        /// <summary>
        /// //*** DataSet ***//
        /// </summary>
        /// <returns></returns>
        protected DataSet CreateDataSet()
        {
            System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();
            System.Data.OleDb.OleDbCommand objCmd = new System.Data.OleDb.OleDbCommand();
            System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();

            DataSet ds = new DataSet();
            String strConnString, strSQL;

            strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
            Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";

            strSQL = "SELECT * FROM gallery ";
            objConn.ConnectionString = strConnString;

            objCmd.Connection = objConn;
            objCmd.CommandText = strSQL;
            objCmd.CommandType = CommandType.Text;

            dtAdapter.SelectCommand = objCmd;

            dtAdapter.Fill(ds);

            dtAdapter = null;
            objConn.Close();
            objConn = null;

            return ds;   //*** Return DataSet ***//

        }


        /// <summary>
        /// //*** DataSet to DataTable ***//
        /// </summary>
        /// <returns></returns>
        protected DataTable CreateDsToDt()
        {
            //ViewState["tmp"] = tmp; //创建数据池
            System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();
            System.Data.OleDb.OleDbCommand objCmd = new System.Data.OleDb.OleDbCommand();
            System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();

            DataSet ds = new DataSet();
            DataTable dt;
            String strConnString, strSQL;


            strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
            Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";
            strSQL = "SELECT * FROM gallery";

            objConn.ConnectionString = strConnString;

            objCmd.Connection = objConn;
            objCmd.CommandText = strSQL;
            objCmd.CommandType = CommandType.Text;

            dtAdapter.SelectCommand = objCmd;

            dtAdapter.Fill(ds);
            dt = ds.Tables[0];

            dtAdapter = null;
            objConn.Close();
            objConn = null;

            return dt;   //*** Return DataTable ***//

        }


   
        /// <summary>
        ///*** TableRows (DataTable) *** 
        /// </summary>
        /// <returns></returns>
        protected DataTable DataTableRows()
        {
            DataTable dt = new DataTable();
            DataRow dr;

            //*** Column ***//
            dt.Columns.Add("GalleryID");
            dt.Columns.Add("GalleryName");
            dt.Columns.Add("Picture");

            //*** Rows ***//
            dr = dt.NewRow();
            dr["GalleryID"] = "1";
            dr["GalleryName"] = "My Picture 1";
            dr["Picture"] = "1.jpg";
            dt.Rows.Add(dr);

            //*** Rows ***//
            dr = dt.NewRow();
            dr["GalleryID"] = "2";
            dr["GalleryName"] = "My Picture 2";
            dr["Picture"] = "2.jpg";
            dt.Rows.Add(dr);

            //*** Rows ***//
            dr = dt.NewRow();
            dr["GalleryID"] = "3";
            dr["GalleryName"] = "My Picture 3";
            dr["Picture"] = "1.jpg";
            dt.Rows.Add(dr);

            //*** Rows ***//
            dr = dt.NewRow();
            dr["GalleryID"] = "4";
            dr["GalleryName"] = "My Picture 4";
            dr["Picture"] = "2.jpg";
            dt.Rows.Add(dr);

            return dt; //*** Return DataTable ***//

        }
        /// <summary>
        /// 选择操作状态
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void myFormView_ModeChanging(object sender, FormViewModeEventArgs e)
        {
            //判断模式 
            if (e.NewMode == FormViewMode.Insert)
            {
                myFormView.ChangeMode(FormViewMode.Insert);
            }
            else if (e.NewMode == FormViewMode.Edit)
            {
                myFormView.ChangeMode(FormViewMode.Edit);
            }
            else if (e.CancelingEdit)
            {
                myFormView.ChangeMode(FormViewMode.ReadOnly);
            }
            BindData();
        }
        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void myFormView_ItemUpdating(object sender, FormViewUpdateEventArgs e)
        {
            GalleryID = ((Label)this.myFormView.FindControl("Label1")).Text;
            GalleryName = ((TextBox)this.myFormView.FindControl("EditGalleryNameTextBox")).Text.Trim();
            Picture = ((TextBox)this.myFormView.FindControl("EditPictureTextBox")).Text.Trim();
            Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);

            //Label lbl_no = (Label)this.FormView1.FindControl("Label1");
            //TextBox TextBox1 = (TextBox)this.FormView1.FindControl("TextBox1");
            //TextBox TextBox2 = (TextBox)this.FormView1.FindControl("TextBox2");
            //TextBox TextBox3 = (TextBox)this.FormView1.FindControl("TextBox3");
            //TextBox TextBox4 = (TextBox)this.FormView1.FindControl("TextBox4");
            //DataTable temp = BindData();
            //DataRow dr = temp.Select("id=" + lbl_no.Text + " and mid=" + ViewState["DataKey"].ToString())[0];
            //dr["nr"] = TextBox1.Text;
            //dr["czr"] = TextBox2.Text;
            //dr["cs"] = TextBox3.Text;
            //dr["rq"] = TextBox4.Text;

            //ViewState["temp"] = temp;//覆盖数据池

            //myFormView.ChangeMode(FormViewMode.ReadOnly);
            //BindData();
        }
        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void myFormView_ItemInserting(object sender, FormViewInsertEventArgs e)
        {
            GalleryName = ((TextBox)this.myFormView.FindControl("InsertGalleryNameTextBox")).Text.Trim();
            Picture = ((TextBox)this.myFormView.FindControl("InsertPictureTextBox")).Text.Trim();
            Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);
            //myFormView.ChangeMode(FormViewMode.ReadOnly);
            //BindData();
        }
        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void myFormView_ItemDeleting(object sender, FormViewDeleteEventArgs e)
        {
            GalleryID = ((Label)this.myFormView.FindControl("lblGalleryID")).Text;
            Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);
            //myFormView.ChangeMode(FormViewMode.ReadOnly);
            //BindData();
        }
    }
}